Single Diode Disinfection

Abstract

A surface light emitting device that inactivates microorganisms may include at least one light emitter configured to emit a first light comprising a first peak wavelength wherein the first light is a blue light, and a light converting layer disposed over the at least one light emitter. The light converting layer may include a first light-converting material configured to convert only a first portion of the first light to at least a second light comprising a second peak wavelength different from the first peak wavelength, a second light-converting material configured to convert only a second portion of the first light to at least a third light comprising a third peak wavelength different from the first peak wavelength and the second peak wavelength.

1 .- 8 . (canceled) 
     
     
         9 . A light emitting device that inactivates microorganisms, the light emitting device comprising:
 at least one light source configured to emit a first light comprising a first peak wavelength; and   a light converting layer disposed over the at least one light source, the light converting layer comprising:
 a first light converting material configured to convert only a first portion of the first light to at least a second light comprising a second peak wavelength different from the first peak wavelength; 
 a second light converting material configured to convert only a second portion of the first light to at least a third light comprising a third peak wavelength different from the first peak wavelength and the second peak wavelength; 
 wherein the first light converting material and the second light converting material are homogenously mixed together to form the light converting layer; and 
 wherein at least the first light, the second light, and the third light mix to form a disinfecting white light comprising:
 a proportion of spectral energy measured within a range of 380 nanometers (nm) to 420 nm of at least 20%. 
 
   
     
     
         10 . The light emitting device of  claim 9 , wherein the first light is a blue light. 
     
     
         11 . The light emitting device of  claim 9 , wherein the first light comprises a first peak wavelength in a range of 380 nanometers (nm) to 420 nm. 
     
     
         12 . The light emitting device of  claim 11 , further comprising a third light converting material within the light converting layer configured to convert only a third portion of the first light to at least a fourth light comprising a peak wavelength different from the first, the second, and the third peak wavelength, wherein the first light, the second light, the third light, and the fourth light mix to form a disinfecting white light. 
     
     
         13 . The light emitting device of  claim 9 , further comprising a substrate, wherein the at least one light source is disposed on the substrate and wherein the light converting layer is disposed over the substrate and the at least one light source. 
     
     
         14 . The light emitting device of  claim 9 , wherein the disinfecting white light further comprises a proportion of spectral energy measured within a range of 440 nm to 495 nm of 10% or less. 
     
     
         15 . The light emitting device of  claim 9 , wherein an intensity in a range of 380 nm to 420 nm is at least 0.01 milliwatts per centimeter squared (mW/cm 2 ). 
     
     
         16 . The light emitting device of  claim 9 , further comprising a substrate, wherein the at least one light source is disposed over a surface of the substrate, and wherein the light converting layer is disposed over the at least one light source and the substrate. 
     
     
         17 . The light emitting device of  claim 9 , wherein the third light comprises one of:
 a red light within a wavelength range of 620 nm to 750 nm; or   a green light within a wavelength range of 495 nm to 570 nm.   
     
     
         18 . The light emitting device of  claim 12 , wherein the second light, the third light or the fourth light comprises one of:
 a blue light within a wavelength range of 440 nm to 495 nm; or   a red light within a wavelength range of 620 nm to 750 nm; or   a green light within a wavelength range of 495 nm to 570 nm.   
     
     
         19 . A light emitting device that inactivates microorganisms, the light emitting device comprising:
 a first light source configured to emit a first light comprising a first peak wavelength; and   a second light source configured to emit a same first light comprising a same first peak wavelength;   a light converting layer disposed over the first light source and the second light source, the light converting layer comprising:   a first light converting material configured to convert only a first portion of the first light to at least a second light comprising a second peak wavelength different from the first peak wavelength;   a second light converting material configured to convert only a first portion of the first light to at least a third light comprising a third peak wavelength different from the first peak wavelength and the second peak wavelength;   wherein at least the first light, the second light, and the third light mix to form a disinfecting white light comprising:   a proportion of spectral energy measured within a range of 380 nanometers (nm) to 420 nm of at least 20%.   
     
     
         20 . The light emitting device of  claim 19 , wherein the first light is a blue light. 
     
     
         21 . The light emitting device of  claim 19 , wherein the first light comprises a first peak wavelength in a range of 380 nanometers (nm) to 420 nm. 
     
     
         22 . The light emitting device of  claim 21 , further comprising a third light converting material within the light converting layer configured to convert only a third portion of the first light to at least a fourth light comprising a peak wavelength different from the first, the second, and the third peak wavelength, wherein the first light, the second light, the third light, and the fourth light mix to form a disinfecting white light. 
     
     
         23 . The light emitting device of  claim 19 , further comprising a substrate, wherein the first light source and second light source are disposed onto the substrate and wherein the light converting layer is disposed over the substrate, the first light source, and the second light source. 
     
     
         24 . The light emitting device of  claim 19 , wherein the disinfecting white light further comprises a proportion of spectral energy measured within a range of 440 nm to 495 nm of 10% or less. 
     
     
         25 . The light emitting device of  claim 19 , wherein an intensity in a range of 380 nm to 420 nm is at least 0.01 milliwatts per centimeter squared (mW/cm2). 
     
     
         26 . The light emitting device of  claim 19 , wherein the disinfecting white light comprises a proportion of spectral energy measured within a range of 380 nanometers (nm) to 420 nm of at least 30%. 
     
     
         27 . The light emitting device of  claim 19 , wherein the second or the third light comprises one of:
 a red light within a wavelength range of 620 nm to 750 nm; or   a green light within a wavelength range of 495 nm to 570 nm.   
     
     
         28 . The light emitting device of  claim 22 , wherein the second light, the third light or the fourth light comprises one of:
 a blue light within a wavelength range of 440 nm to 495 nm; or   a red light within a wavelength range of 620 nm to 750 nm; or   a green light within a wavelength range of 495 nm to 570 nm.